Heating device.



. l). L-DSWURTH.

HEATING DEVICE.

APPLIOATIQN FILED APB. 3o, 1906.

atented Sept. 9, 1913.

2 SHEETS-SHEBTI.

u .a 7a

F. D. HGLDSWORTH HEATLNG DEVICE.

APPLICATION FILED @11.30, 100m atentfed Sept. 9, 11913.

2 SHEETS-SHEET 2,

Stilte of New Hampshire, have fm swarm the cfmnby the ilusrate intended mme ing of cnmpre practice wher@ .v :L .f

zenentmg line pats.

Mv mvenmm saura@ of powa?.

My m'entfm W reference tu the n;

and eevation nf the Smm m plan on ille Ime 4 only," n? the Shown m there. shown a adaped to rece the source of J 1S a, pun of (ma of ih mi own in the dznwin xe drawings keating evces herec-' being fur he wheat mh common 1s; @mp3s-yal;

V- n Anw an mg a Fig. 7 1s a pian end seni-72ans of the Feheaez E? of ik@ same; F

Eng ne ms of the gs and mure mu"- @ms embodxmen o my to it the necessaryheab, t@ diver it o i322@ power cnsumng a any other sug 1, which supports a and a cyndrca ring c md with jie brick c hel'ey gnwed wiin ichs base an ash pi, if; which is had 'xouglf; th@ hinged a, and, a'mve the grate a re pots accesa@ i0 which is had hmugh h ingdy dem" ce, The z'e may thaefore be fied ".o-ugh die doof c2, th@

o? basa Ther@ is gh h?, hinged onf an ornary furnace.

Surmolmtng t1 e base rim? is a ravainng ying a? vvtlc afs vto ho Le ie bck in l io suppm'ib the overhead main fz, as is usual in Y miser ejfimdmca casing and "aha comazned heamg; sasmnss. 'fha (mie:- she m: casing l'leang surface for the eompressed airis 'dad bj. a. of ssupel'imposedq cast iva which in time u but which i0 furnish 'being con; ,63e reguaing damper adg'used-and held at any interna@ ami conducting sefrnsv diete sections and change the length of the main shell or casing. Each section presents a substantially similar circuitous heating conduit, to the compressed airwith an inlet trein the preceding section and au outletl to the succeeding section, the air in passing from end to end of the conduit afforded by the sucssive Sections being brought in contact with the highly heated Walls thereof.-

Referring first to the construction of the top and bottom sections, which, as above sta-ted, are duplicates, but reversely arranged, these are provided with flan ged openings or nozzles g, the lower one of which extends through the casing and the asbestos packing at one side ot the reheater and is connected to the source of compressed air supply', and the upper one of which extends through the opposite Si'deof the easing near the top thereotl and is'adapted Ato be connected with the air consuniin means. The remaining portion of the section presents a generallyannular conduit'g into which the aircnters through the nozzle g (Fig. 4) and separates into two branched'paths gz vand ga. 1is ring-like or annular-.seetiom however, is bridged (Fig. 2) at g* so'as to present a' cross passage for the air, this cross passage being provided (Figs. l and Il) with a partition gs which extends diagonally and downwardly so'as to create in the bridgedportion two separate chambers g7 andy, the former opening to 'the conduit entrance and the latter to the terminal part thereof. The seetions are provided at the top and bottom faces with centrally arranged hubs or bosses gg, having interiorly pipe-threaded openings, the location ot these threaded openings being such that the lower one has connections with the chamber gl and the upper one with the chamber gc. These sections being symmetrical with'reference to a central -horizontal plane, a duplicate of the lower fil) section has merely to be reversed in position to provide the upper section.

The intermediate sections are almost identical in construction with the end sections, save that they are without the nozzle g, the air entering and leaving them through their central lower and'upper openings respectively'. Thelower section of the rel'ieate'i' has its lower'ccntral opening closed by the threaded plug g. Resting upon the'upper boss of thev lower section is the next adjacentv intermediate Section and effectively secured thereto by the threaded annular nipple g" (Fig. The latter has tapered pipe threads at each end and is first screwed into the lower section by a spanner or other tool engaging the interior lugs gil. The upper section is then screwed down upon the projectingtapered threaded end of the nipple. Successive sections are fastened one upon another in similar fashion.

.The air entering at the inlet noz'le on the nove lower ring first branches into two streams 'and again re-unites in the chamber ge. From 'separates and passes around the section, re-

uniting again in the chamber g", from 'whence it passes to the nextsucceeding section, and so on, repeating this eircuitous movement within the highly heated walls of the successive sections, until it finally emerges from the outlet nozzle on the upper ring, the upper central opening of which is closed by a threaded plug g1.

Although the sections are shown in registration one with another, that is to say, with the bridged portions lying in the saine direction, it will be obviousv that any reeise relation of the kind is not necessary or' the air enters and leaves each section centrally. As a matter pf fact the threads upon the sii" threaded couplings can seldom be so eut as to bring the sections into any alining relation when they are each screwed to a seat.

The main conduit portion of each section is secured at intervals by ribs i, to a surrounding annular shell JL', herein in the form of a ring-like inelosure, which, as will be seen from Fig. l1, is a total width or height somewhat less than the total distance between the opposite bearing surfaces upon the central bosses of the section, so that with the central bosses of adjacent sections conf tact there is left a slight clearance between the adjacent edges of the rings.

When assembled, the ring of the losvermost section rests/upon the retaining ring d.

Each successive section is supportedby its predecessor through the central bosses, the rings of the several sections when the latter are positioned forming an almost but not gitudinally, the base of the reheater is exteriorly provided with four lugs j, two ofy which are shown in Fig. 1, these being in vertical alineinent with four similar lugs j upon the smoke bonnet ring. When the sections have been assembled and the casing and lining placed in position, tie-rods je with threaded ends are passed through these lugs and nuts screwed over the ends firmly to bind all parts together and in position. Two ot' these tie-ro ls oppositely located' are provided with eyes 7'3 at `their upper ends so that hoisting tackle may be attached and the entire reheater readily moved from one place www@ ha nnefnnii expanssion of diffe@ @if the appmnus an iin? high winni; amrinyeii with 'die re an', ii: has iig/raining@ berm nesesnry i 'fwizmieifui 'eiieaeers Wh which an; ifnif'vio maiis spcini povision in :ivoirinffr: ci" aaim iiiimxgh excensii'e expansicn.

ne rieafrxiiied V'niieaziar, however, die Sefa- :nF-J, :which iieziv'iiy ('Ig-ns'rmbed Wiih it w in' "fs: ien-iid am?, wei? fied, am pai- 'Me io izpami of' contract with any cmpmzitm' vm'inifions vwitiimn irmiiminq the insist simin upon ih@ struc iure wixien Wmiiftenfi am weaken 'the joints or sans@ ieaimgc iiiei'eat.

The neming @i ",ncy' u? he (ies'cim-i sifuniirf; is biggie pnciimiiijgf nii mi in@ heating snfacr; if; minimi of. The wifi-- inf? infinit ff'in each .se/tima acts :is a imi c tu spread the gnnducirx of mmbusinn 'by pai-iaiiy obs'irueing iii@ mentr'ai opening in Hw, @actions ami thereby (iirefzin f auch n'bfiuni oi"- aomimntinniniffraiiy an( mmsmg iiifim to nnisifie 0'? iii@ :innuim' (10nmiin ami between tig, intim' :1mi the :mnuizu' infvlosing rings, iherniiy pausing avery' ffii'uctiv and gmimi {isiiiiution if tim appied imn.

ii wiii im @Viviani iiia ehaaters of Wideiy different amenities im @ansi-minimi, im :xbovs ztnrx, ivy mceiy W Wing ih@ number of iiiorrrmfi'iie sen-nona i iii] iengii mi ihr; (mier casing. noiiikir ii'npmtnn mi winngn L 4 inz imiing conduit nnrn mit o? im 'i2 any mein?, ia? may ne quickiy imi iiwffiviy 'ilpfiai (i .'liiisfiinting n. new smfiiinn :iin iiwi fiiifn an be (iene wifi; mit iiia u: w deizy.

inta Swions, suppmted all fllpiifffxt mmnwri one nimm ih@ otimig uw, imifi ingeiwi' 'ny fum' infr-'Hifi 7n, which paars imnsvei-'neiy im hm'izf, Mafia, o1 siniionf-i iiir'o'iigii upvningw ifnmmi in, (ravin in upper an@ invvar bnssex "i'iwse imanes zaini Qpcn'ngs im' the intermediate .wviirmn :mi ai'. ngfi'in'paizfi. (x one siii@ oi' ihn election there, is provided (Figs. 7 und i?) n pair of iin-ge bosses Z, ihrmifzii which am openings Z handing to 'the inierirn ammini' nomini?, said npenings iveing of mnsidvruiiiy grenier diameter than tim Lie-rm wiiiuii 'passes iicrah'nugh, The cm'respnning pmx' of bnsSes on the opposite sidi), 0i the Seatimi Luni *im remaining pair ci imssv m1 the same side of iiiasectinn are of smniier inmate? anf provide vvli opqnings jiift siicien in prmib the pas- 'sage of the e-ros hez'ethrougia wihsui permiing ieakage of mii'. The remaining of bvsse and openings m ih@ oppsite i e of ih@ section are o enia'ged diameter.

Tia@ upper anti ioweij sections ae provieci ai iieii nppin" and iower sides, respectiveiy ivoes Z2 (Fig. 9) iii'migh which the sfmig pass wik a giriy tigh fit and ai ir tiara/find ends iiey secured by 'A i The upon in@ lower ecin are connepbm'fi to receive he ,iir-gavi pings Z which prevent escape of air :at that poin;

T provide 'for expansion the tie-rods project :ibm/e the upper section and are extendd through ih@ smke imnnet, having cash at iis n )per and a nui and Washer zjesjting uit-fin tu@ ,si-iii miiefi steei spring? m, which spring bears upon :i washar'm 'the infiel 'ieing On iii@ sleeve m2, which in turn rants upon the upper heating section. 'When he s-ziz'iictnra is initiaiiy nssfmblfi the mits are .fgfzi'nwed down to rrompr'sn he springs and bind the Serctinns tightly togotha?, tile springs, however, yielding ,when necvssuxy to pm'mit iiie expansion nf the sswiions. The iempei' of the springs is presez'i'w'i by irac'aing them @Minnie of tine Sinni-:e imni'm. :mfi ainm'efi imm i'm imn. of the ii'e. To pzeei'it the of nii' about 'the iis-fof Whey@ 'iiwy pass through he upper sffctinn, the inffiosing sine/ves n, ini busses Z2 of ihe section, ae' gn'ovniefi, iiie sieeves Ming cm'eefi by iiw iirehfimi cap 4n.

1T he pain of the aii' iimngii iii@ Simca ive sentan@ wiii iis piain frm-n the diescripimn drawings. Eneiing iii@ inlet m imnnie fai" the iowa? section ne ail' sepal'as, :is iifuye, im@ 5W() simi-ms which pasas to iie niposie side of the Mention, and nsmi in ie app/ei' @seciifm through he iazve sized opening aiifmt the tivfrmis. Tiles@ large? 'opaningn in the bosses are arranged ailiermiy'on sppsite sides (if the sectin and. M9

[iiie successive sections are 'eveised'in pessiiifm no anni the' ail' Liter antan-ing one se@ tion iiaveis horxzontniiy m one directifm, init nn entering the next section taveis revmnqeigiiia cmnpiete course of the uit from m5 I taking place in a somewhazig-zag pain. The )omis iieween the adnnzent .wm-irons, if desired, may be packed 1nuny smtubie way to prevent ieakage.

The main imy portion of the Pf'ecfms b- 12g ing suimimtiaiiy annular in om, ih'eie would namraiiy be init an unobsiructad cen-4 jtzai npeningireseniing a direc@ cLntrai path im' ih@ pl 1ct@ of mimbnnion. more of the intermediate is preembiy provided with a plurality of inerioriy prujectin lugs 0 konly one* of which is shownin Ei (5, to which may Ibe acting@ prevent the' 'One orl hoi gases from the fire,

sections theifere 125 from passing dirmi; n@

"2 Having thus described through the central openings in the sections. This serves as'bailling means to` cause the better general dissemination of the hot gases.

W'hile l have described my invention as embodied in a reheater for compressed air and, in connection therewith, the same pos sesses marked and important advantages, certain features thereof may be employed in other connections. My, invention therefore is not limited to the specific application thereof here illustrated, 'or to the particular details, of formpr relative arrangement of parts here shown but extensive deviations therefroin may be made without departing from the spirit thereof.

my invention, what I claim new is,

l. A compressed air reheater comprising a base, a combustion'chamber upon said base., a cylindrical casing surmounting said combustion chamber, a smoke bonnet and flue above said casing, a plurality ot heating and conducting sections between the fire box and the smoke bonnet and Within the casing, said sections comprising duplicate top and bottom members reversely arranged relative to one another and respectively provided with outlet and inlet openings, and intermediate duplicate sections mounted' one above the other, each intermediate section having a circuitous conduct portion with an inlet from the pre ceding section and an exit to the succeeding one and means for separately and removably securing each section to the one or ones 'adjacent thereto.

2. An air reheater comprising a casing, a combustion chamber adjacent the lower end thereof, a plurality of substantially annular heating and conducting sections supported one above another and above the combustion chamber, said sections having each an inlet connection With the preceding section and an outlet connection with the succeeding one from bottom to top, said section including end sections, a cylindrical shell united to each annular section but of greater diameter' than the latter, and a non-conducting lining between the casing and the outer, Walls of said several shells.

3. A heating device having an upright easing provided With a combustion chamber adjacent the lower end thereof, a smoke bonnet, a plurality of separate heating conduit sections having an air inlet and an air outlet and supported one upon another Within said casing and above said combustion chamber, means for separately and removably securing said sections together and tie-rods binding together said smoke bonnet and said cornbustion chamber. l

Il. A section for a sectional heater comf prising a main conduit portion Vprovided with i an inlet and an outlet passage adapted when the said section is in position for presentation to the next preceding ,and succeeding airfares shell embracing the same united thereto at* l intervals, and a plurality of outwardly directed radial lugs secured to said shell.

7. A heater having a easing, a non-conduetingl-lining therefor, a, plurality o conduit sections provided each with an inclosing shell united to said section at intervals, and carrying means engaging saidiiniug to prevent relative displacement.V

8. A heating device having a casing, a plu rality of removably attached conduit tions secured one to another, said sections comprising end sections with air outlet und.,`V`A

inlet openings res ectively2 `and duplicado-- connected interme rate sections, and a surf rounding shell secured to each section lto form a substantially continuous cyiindrical casing Within the main casing.

9."y Amliti'ter having an uprightfcasing, aY

baseininemb'er upon which said casing rests,

and a plurality of conduit sections arrangedV `one above another Within said casing, said sections having a surrounding shell attached thereto, the lovverinost section resting upon saidbase member through its sheil andthe upper sections resting each upontbe 'preced-- ing section.

10.` A section for a sectional heater com.-l

prising'a main conduit portion provided lidi) with engaging 'faces on its opposite sides for engagement with the corresponding faces on the adjacent sections when in place, and a surrounding shell connected thereto at intervals, the Width of the surrounding shell be# ing less than the width of the conduit section between opposite faces. v

11. A reheater for compressed air cour prising a casing with a combustion chamber, and a plurality ,of conduit sections present ing a circuitous conduit to the compressed ,aa-ir exposed to the heat of the products of combustion, said series of attached conduit sections being supported at one end but capable of an expansive movement in the opposite direction.

l 12. A heater having a easingpa combusiis tion chamber and an air heating and con-l ducting conduit comprising separate but cent-rally attached-sections adapted to expand freely in the direction of their attachment. .v

13. In a device of the type described, a 'heating section provided With a pluralit'yuof projecting ribs and a band secured adjacent-f and a band or ring-,secured to said ribs adjathe yand portions of said ribs, said heating section having a conduit portion provide with oppositelyl directed inlet and outlet openings.J

14. In a device of the type described, a ring-like heating section having a conduit extending circumferentially about said section, said section being provided with a plurality of ribs extending radially from the circumferential portion of the section,

cent'the outer portions thereof to provide I clearance between said band and the circumripheral portion of said sections and bands secured to said ribs, the band of one of the lower sections resting upon the top of the combustion chamber to be supported thereby, and said lower and upper sections having an air inlet and an air outlet, respectively.

16. In a device of the type described, a

casing, a combustion chamber and a plu rality of heating and conduit sections centrally attached ,gne to another and provided with communicathg passages through the central attachments, ribs attached'to the pe- ,ripheral portion'of said sections and bands `i'acured to said ribs, the .band of one of the lower sections resting upon the top of the combustion chamber to be supported thereby, said lower and upper sections having an air inlet/and air outlet respectively, and a packing of nonconducting material between said bands and said casing.

` 17.111 a device ,of the type described, a

casing having a cinbustion chamber, an air heater comprisin a plurality of connected and communicating rin like conduit sections arranged above said combustion chamber and adapted to be heated thereby, each of said sections having an annular conduit pass and one or Amore centrally arranged apertures or orifices for the combustion products, a .plurality of radially extending ribs, extending outwardly from the circumferential portions of each of said sections, a candor outer shell secured to said ribs adjacent the outer ends thereof to provide a plurality combustion products.

of peripheral Passages for 1, i

18. In a sectional heater, a section coin- 5 prising a hollow ring like member adapted to be connected with similar members and..

having centrally located means for connect-'1,1 a

ing said members therewith, an outer shell connected with the peripheral portions of said member I,to provide clearance space be tween the same and said member and centrally located means forming a bridge tween the Walls of said member and presenting 'apertures extending through saidk member from one to theA` other of its faces.V I

19. A heater having a casing and a com'- bustion chamber and a plurality of substantiallyannular air heating and conducting sections centrally but removably attached to one another and provided each with an air inlet passage Ithrough the central attachment to the preceding section, and -an air. outlet passage through a point of its attachment to the succeeding section, the annular walls of said section having circuitous conducting passages through which only the said inlet of each section is connected with lthe outlet o that section, and end sectional members detachably connected centrally -each to its adjacent section, the inlet and outlet end sections having respectively lateral inlet and outlet passages in the side annular walls of the sectionvfor connection each to a conduit or pipe, whereby the structure may be increased or decreased as to capacity by introducing additionallintermediate sections while employing the same end sections and preserving the circuitous-4 in the said annular walls of the member.' portion through which air is adapted to In testimony whereof, I have signed' my name to this specicatiomin the presence of, 

